1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b279c908d6756a1db69754ff4db9698652de1159dd99a88072dae4a66637df. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/995c4d75-8301-4d69-83e6-a31b5f382384.json and https://artists.proofprofile.net/proofs/artist/995c4d75-8301-4d69-83e6-a31b5f382384.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5f3dba090b5d39dcb67609362e53930c35dc1b541529a973bac854b55e3642. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e0dba23d6ef7a86aee5e9551db2b7f42b8fa33ceb8ee73161361f588520d44. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedca8062df6798e2b76f66dc3ef717f7f3cf0fe2bcb4135632f46035635fa40. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1917e6b331ea158f8bb258e96de9b76d722ac7151531631e620be619d484181a. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17016891b1dc30a895ec54886180b4efa8e574f11fedd90525b2a2dd6bb7ad0e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4602c291029d2dfbf8f0e8a5d6d186865e3c65f2c5eb0fe8ef4503299cc7fa23. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa712915df377f4cf84686c2a812d2b47c5e65b74d4eee120faa7e69801778544. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083614b3762b16f7dea3d19579af10c50b29de3f40da866d323c86bed0691356. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386f25d4e4e2fb769a8a14be45f54026a681934cb170d514bfd10986efd5f04c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e285a83a11e875a1b648a5833d3668946cbc83c5efc071dd4be97310f344a9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e94763c991856e5ebb10bff931fef44125cd9b82ffec371b040f9bf2b93627. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535e450430a180f43fe3e9f474a44f05b95e02f20f256342cdf0b6f5f1d29d7c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a38b9b611e6f2b981fddfd4179a7cc7ffcf31354b6d6d56043ac10372cc1a06. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b00ff4c4c803fee630b1f8093873479c7af25bd07b7bc6e46b533c63e70bcab. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862614c69cb669f69eca0eb18bd515e88ba72bbf22f022bae01b4386bce92b46. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a0c29979c99e361bff5a5a9c0e5257f949d072e097d416e00aabd6a20eb9f0. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300042.
Curtição ( Homenagem à Bateria de Padre Miguel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32c1115a32cd96ba8238b9c7420e4ff97c6fdbce2241cb5d9e71d0b64a04ddc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9db9d259dd196eb6cdeb802262033b09a8258439c4d3c4d670629e9e4c6865. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fd89d300387a4c0bf0f04a620a9c0e29ed4edd1077cfce600fad91ed7d23e3. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf348e9c777ba47bbffb92085f9fd7bb6e6c02bd09901741eaa5b9b2fda5c69. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a030700cab4babbc0cb00d92b89d488e5cad12653967ec116c056480beac3eb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d639e15484e162c70eea9197c161237d2c60ec749118eeacc3708bd279132a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c84e765c3b715aefe9ac2a745e94bc0155274da21e5fff15681b4a7cce967b. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4ed47f9f6cfa79951957275f7a46bb59b1348b94f9142d77c9754c4f853e50. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb7349cf12f35cfc1e9031ae7d5bacb0d8a6ff8fc463d07ca3a725735adeefc. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ce194de2ed0c53a0dcb94fff000de5a6103e4ecb553827df7bbeecb2160d50. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716856f23cb3adf03f25c1905e9919a496b5b2d93e50070fa983faef0ca55948. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940ee95a02c8e6b9e5c1dfbac90efd4f97693273ccbf5cfbcceebbe834f73f30. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6203b47348e1ffc1a8ca41ebb410ad76cd056373f6fb7fffb66e5e1272567149. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efd89a9c4b96cd20dd4592880d11e439227fe045327eaa296a047c3b5475c02. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b625434fd44c4987ea7fdeef0a80ca530650525d6197be3287ca736976303ac. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcea5155dbba84492632e9537a44fe234c97e066beec1704dd71fc684ff77961. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69df58f1768e77343e5f650db768831c903389063bb48b8474b91a66506f57fb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4aef45cf9a7455e7eac022ec4d16355b035720e85834034f6102dc065b1993. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6308efc4462356c23c86e60af88889c670b5df580d0862ff32f1c16102fad9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fc2c305054afcef62f63becdc3da0da17e1882945469005099a0254fca542a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP0300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f3081b3bb879e44c5018f07322c6dcc6dd26dc45852c5393df928bdcae30fa. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b6483d94098ab407b3a5112e56d81fa9a3bb6e34d5bff78fb5f6b594b8ebcc. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4078156c858296264719c419182ad06671f246fd523ca93affe181ed2e77ea4f. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRBIP2200001.